How do I get a biro mark off the wall?

Sarah Taylor, via emailUse milk — it also works on leather. Baby wipes can also be good.

Marion Riley, via emailGently rub with a baby wipe. For more stubborn marks, use a little toothpaste on a cloth.

Len Amey, via emailScrub mark off with a green pan scourer and detergent such as Cif, rinse and dry. Then paint over the mark with an oil-based primer or undercoat. Dry. Lightly sand. Then paint over with the original colour.